A kind of heat conduction oil system that prevents the conduction oil oxidation
Technical field
The utility model belongs to the chemical industry equipment field, is specifically related to a kind of heat conduction oil system that prevents the conduction oil oxidation.
Background technology
Heat conduction oil system, be called again the organic heat carrier heat-conducting system, because of its homogeneous heating, temperature control is accurate, steam pressure is low and heat transfer efficiency is high advantage, be used in more and more the industry that textile printing and dyeing, artificial board shaping, plastic cement processing and medication chemistry etc. need heating process.
Existing heat conduction oil system comprise organic heat carrier furnace for heating conduction oil, for be communicated with organic heat carrier furnace and with the inner loop pipeline of hot equipment, be arranged at circular-pump and the gs-oil separator on circulation line and be communicated to expansion slot and the oil storage tank on inner loop pipeline.Wherein, circular-pump is the power source of conduction oil in the inner loop pipeline motion, and operated by rotary motion has two, is respectively main circulation pump and stand-by pump; Gs-oil separator is used for being isolated and excluded air, water vapour and other gas in heating system, thus guarantee conduction oil liquid phase without the state of gas, water under stable operation; The compensation that expansion slot produces Volume Changes as conduction oil because of variations in temperature, thereby the pressure of systems stabilisation thermophore, simultaneously all right help system dehydration steam discharge; Oil storage tank is mainly used to store the conduction oil that head tank, boiler tube and system are discharged.
In existing heat conduction oil system, the oily long-term work of heat conduction, under hot conditions, can be gone bad because oxidation reaction occurs, and generates greasy filth, and causes acid number to raise.Heat conduction oil system is in the time of work, although the oily operating temperature of heat conduction is very high, whole system is similar to sealed circulation system, only has expansion slot to contact with oxygen.Cause heat conduction oil main cause apt to deteriorate to be that the oil temperature in expansion slot is too high, according to the requirement of " boiler of organic heat carrier mounting technique Supervision Code ", in expansion slot, oil temperature should be controlled at below 70 ℃.Yet the reality of recognizing from industry be the expansion slot oil temperature generally higher than this requirement, great majority more than 80 ℃, what have has even surpassed 100 ℃.
The main cause that produces this phenomenon is that the conduction oil generation convection current in the expansion tube that connects expansion slot and gs-oil separator causes, the convection current in expansion tube causes deep fat to rise, and cold oil descends, and therefore, finally causes the oil temperature in expansion drum to rise.
The utility model content
The utility model provides a kind of heat conduction oil system that prevents the conduction oil oxidation, and this heat conduction oil system can reduce the temperature of expansion slot inner fluid, reduces the oxidized speed of conduction oil.
A kind of heat conduction oil system that prevents the conduction oil oxidation, comprise serial connection successively form in peripheral passage circular-pump, organic heat carrier furnace, with hot equipment and gs-oil separator; The oil phase entrance of described gs-oil separator is connected with the hot equipment of described use, and the oil phase outlet is connected with described circular-pump, and the gaseous phase outlet of described gs-oil separator is communicated with expansion slot;
The pipeline that is communicated with described expansion slot and gs-oil separator is provided with surge tank.
In the utility model, described surge tank is for destroying the convection current of the pipeline inner fluid that is communicated with described expansion slot and gs-oil separator, thereby prevent the deep fat upper body that in pipeline, fluid occurs because of convection current, the phenomenon that cold oil descends, fluid in this pipeline can be lowered the temperature effectively, thereby further reduce the temperature of conduction oil in expansion slot, prevent the oxidation of conduction oil.
As preferably, the tank body of described surge tank is cylinder type, one upper lateral part of described tank body has entrance, the opposite side bottom has outlet, described entrance is connected with the gaseous phase outlet of gs-oil separator, and described outlet is connected with the bottom of described expansion slot, adopts this kind of arrangement, can make the conduction oil entered in surge tank fully mix, temperature is even everywhere.
As further preferred, the distance on described entrance and described tank body top is 1/10~1/6 of described tank body height;
The distance of described outlet and described tank body bottom is 1/10~1/6 of described tank body height, adopts this kind of mode, can make conduction oil mixed effect in surge tank better.
As preferably, the top of described surge tank is connected by pipeline with the top of described expansion slot, and described pipeline is provided with closure valve, adopts this kind of connected mode, can make pressure in the surge tank top and the pressure balance at expansion slot top.
As preferably, the bottom of described surge tank has fuel outlet;
Described heat conduction oil system also comprises oil storage tank, and described fuel outlet is communicated with described oil storage tank.
As further preferred, described fuel outlet lower end is provided with dispensing valve, when described heat conduction oil system is shut down, can open the dispensing valve of bottom, makes the conduction oil in surge tank get back to oil storage tank.
Compared with the existing technology, the beneficial effects of the utility model are embodied in: by between expansion slot and gs-oil separator, surge tank being set, can effectively destroy the convection current of the fluid in the pipeline that is communicated with both, eliminated the phenomenon that the deep fat upper body that in the pipeline, fluid occurs because of convection current, cold oil descend, finally reduce the temperature of conduction oil in expansion slot, prevented the oxidation of conduction oil in expansion slot.
The accompanying drawing explanation
Fig. 1 is the structural representation that prevents the heat conduction oil system of conduction oil oxidation of the present utility model; In figure, 1: circular-pump; 2: organic heat carrier furnace; 3: use hot equipment; 4: gs-oil separator; 5: expansion slot; 6: surge tank; 7: oil storage tank; 8: closure valve.
The specific embodiment
Below in conjunction with accompanying drawing, the heat conduction oil system that prevents the conduction oil oxidation of the present utility model is done to further detailed description.
From the structural representation of the heat conduction oil system that prevents the conduction oil oxidation as shown in Figure 1, this heat conduction oil system, comprise serial connection successively form in peripheral passage circular-pump 1, organic heat carrier furnace 2, with hot equipment 3 and gs-oil separator 4; The oil phase entrance of described gs-oil separator is connected with the hot equipment 3 of described use, and the oil phase outlet is connected with described circular-pump 1, and the gaseous phase outlet of described gs-oil separator 4 is communicated with expansion slot 5;
The pipeline that is communicated with described expansion slot 5 and gs-oil separator 4 is provided with surge tank 6.
Surge tank 6 is for destroying the convection current of the pipeline inner fluid that is communicated with described expansion slot 5 and gs-oil separator 4, thereby prevent the deep fat upper body that in pipeline, fluid occurs because of convection current, the phenomenon that cold oil descends, fluid in this pipeline can be lowered the temperature effectively, thereby further reduce the temperature of expansion slot 5 interior conduction oils, prevent the oxidation of conduction oil.
The tank body of described surge tank 6 is cylinder type, and a upper lateral part of described tank body has entrance, and the opposite side bottom has outlet, and described entrance is connected with the gaseous phase outlet of gs-oil separator 4, and described outlet is connected with the bottom of described expansion slot 5.
The distance on described entrance and described tank body top is 1/10 of described tank body height, and the distance of described outlet and described tank body bottom is 1/10 of described tank body height.
The top of described surge tank 6 is connected by pipeline with the top of described expansion slot 5, and described pipeline is provided with closure valve 8.
The bottom of described surge tank 6 has fuel outlet; Described heat conduction oil system also comprises oil storage tank 7, and described fuel outlet is communicated with described oil storage tank 7, and described fuel outlet lower end is provided with dispensing valve.
The above-described specific embodiment has been described in detail the technical solution of the utility model and beneficial effect; be understood that and the foregoing is only most preferred embodiment of the present utility model; be not limited to the utility model; all any modifications of making in principle scope of the present utility model, supplement and be equal to replacement etc., within all should being included in protection domain of the present utility model.